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Abstract: Carbon dioxide
absorption in aqueous solutions of amino acid salts (AAS) involves simultaneous mass
transfer with multiple reversible chemical reactions. The process is mathematically
modeled by a set of nonlinear ordinary differential equations (ODEs) which cannot be
solved analytically. However, near-exact solutions may be derived using the "Thick Film"
linearization technique ... read moredeveloped by K. A. Smith for application to the analysis of
carrier-facilitated membrane transport. This technique is a variant of singular
perturbation methods and is computationally efficient. In this thesis, the Thick Film
analysis is applied, in the context of the Film Model of mass transfer, to calculate
rates of absorption of carbon dioxide in solutions of potassium glycinate (PG) and
potassium sarcosinate (PS). Calculated enhancement factors, E, by which reaction
multiplies absorption rates are in excellent agreement with values obtained via more
computation-intensive numerical methods.
(M.S.)--Tufts University, 2012.
Submitted to the
Dept. of Chemical and Biological
Committee: Nakho Sung, and Christoph